I have seen it, and I don't get the reported problem with showing the "dark side" of the Beatles, because it barely exists in the film. Barring the infamous argument between George and Paul (which to be honest was a pretty tame affair) most of the film is just the Beatles sitting around jamming or working on tracks or messing around. Other than various Beatles occasionally looking fairly bored (which for all we know is how they looked most of the time in the studio), there isn't anything about it thats all that negative or reflects especially poorly on the band. And the rooftop concert is great; this alone makes watching the film worthwhile.
"Magical Mystery Tour" on the other hand, is an abysmal, unwatchable mess. Arrg.